Telephone system



March 4, 1952 A. J. BUSCH ET A1.

TELEPHONE SYSTEM 27 Sheets-Sheet l Filed Dec. 5l, 19423 /NVENTRS ATTORNEY Mflrch 4, 1952 A. .1. BUSCH ET AL 2,587,817

TELEPHONE SYSTEM Filed Deo. 3l, 1948 27 Sheets-Sheet 2 ATTORNEY March 4, 1952 A. J. BUSCH r-:T AL

TELEPHONE SYSTEM 27 sheets-sheet 5 Filed Dec. 3l, 1948 ATTRNE Y lMarch 4, 1952 A. J. BUSCH ETAL 2,587,317

TELEPHONE SYSTEM Filed Dec. 3l, 1948 27 Sheets-Shee,` 4

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ATTRNEY March 4, 1952 A. J. BUSCH ET A1.

TELEPHONE SYSTEM 27 Sheets-Sheet 5 Filed DSG. 51, 1948 -MMV T von MOM

ATTORNEY A. J. BUSCH ET AL March 4, 1952 TELEPHONE SYSTEM 27 sheets-sheet e Filed Dec. 31, 1948 A. .1. BUSCH H. .1. M/cHAEL INVENTORS ATTORNEY March 4, 1952 A. J. BUSCH ET m.

TELEPHONE SYSTEM 27 Sheets-Sheet 7 Filed Dec. 3l, 1948 A. .1. uscH /NVf/WO H. L M/c/-m EL ATTORNEY A. J.. BUSCH ET AL,

March 4, 1952 TELEPHONE SYSTEM Filed Dec. 51, V.1.948

27 Sheets-Sheet 8 WNO AJ. ,9i/30H hw. M/GHA-EL @6M /NVENTRS ATTQR/VEY March 4, 1952 A. J. BUSCH ET AL 2,537,817

TELEPHONE SYSTEM Filed Dec. 31, 1948 27 Sheets-Sheet 9 AJ. uscH ATTORNEY /N VEA/70H5 H J, M/CHAEL p r .www

A. J. BUSCH ET AL y lMarch 4, 1952 TELEPHONE SYSTEM 27 Sheets-Sheet 10 Filed Dec. 3l, 1948 AJ. BUSCH Nm/Ti? HJ. M/cf/AEL 6? 6. ambi ATTORNEY March 4, 1952 A, 1, BUSCH ET AL 2,587,817

TELEPHONE SYSTEM Filed Dec. 31, 1948 27 Sheets-Sheet ll /NVENTo/S H AJ 6? 6. M

Arm/PNE? March 4, 1952 A. J. BUSCH ETAL 2l587817 TELEPHONE SYSTEM 27 Sheets-Sheet l2 Filed DeC. 51, 1948 //V VEN TORS ATTORNEY A. J. BUSCH ET AL March 4, 1952 f TELEPHONE SYSTEM 27 Sheets-Sheet 15 Filed' Deo. 3l, 1948 f AJH/JSM Nm/MRS H J. M/GHAEL ATTORNEY March 4, 1952 A. J. BUSCH ETAL TELEPHONE SYSTEM 27 Sheets-Sheet 14 Filed Dec. 31, 1948 u 9 -E m9- Il NSI QQQT/ A. J. BUSCH /NVENTo/s H. J. MICHAEL son?,

By @am ATTORNEY March 4, 1952 A. J. BUSCH ET AL n 2,587,817

TELEPHONE SYSTEM Filed Dec. 3l, 1948 27 Sheets-Sheet l5 AJ. BUSCH NVE/m55 H../. M/GHAEL ATTORNEY March 4, 1952 TELEPHONE SYSTEM w @if h@ m Au. Busch' /NVEWORS H. ./.A MICHAEL By @aM ATTORNEY March 4, 1952 A. J. BUSCH r-:rAL

TELEPHONE SYSTEM Filed Dec. 31, 1948 mOm` mom

mn Afl A'. J. BUSCH WVU/70H5 H../. M/CHAEL A7' 7' OHNE Y March 4, 1952 A. J. BUSCH ET AL TELEPHONE SYSTEM 27 Sheets-Sheet 18 wn.. Q\ 3S Em\\ BM J. NQS AJ. H.

m m @Hwww u M @HKM V rll ww W Q N Y Q ATTHNEY A. J. BUSCH ETAL March 4, 1952 TELEPHONE SYSTEM 27 Sheets-Sheet 19 Filed Deo. 3l, 1948 /fvvE/vroks HA' l BUSCH ,.l. M/GHAEL A 7' TURNEY A. J. BUSCH ET AL TELEPHONE SYSTEM March 4, 1952 v??Sheets-Sheet 2O Filed Dec. 3l, 1948 LL t \.wIDON ATTRNEY 

